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Time zone converter

Convert one moment into the local time of several cities, daylight saving included.

  • Runs in your browser
  • No sign-up

Then you can

How to convert time between time zones

  1. Type the date and time as YYYY-MM-DD HH:mm using a 24-hour clock. Leave it empty to use the current moment.
  2. Enter the city or zone it is from, such as New York or Asia/Kolkata.
  3. List the cities to convert to, one per line or separated by commas.
  4. Read each city’s local time, weekday, date and UTC offset. Cities on a different day are marked next day or previous day.

How it works

There is no network lookup. Your browser already knows the rules of every time zone through the standard Intl API, including the dates when each place changes its clocks. The tool turns the wall-clock time you typed into an exact moment, then asks the browser what the wall clock says elsewhere at that moment.

Daylight saving is why a fixed “New York is 5 hours behind London” fails. The gap is 5 hours most of the year but 4 hours for a few weeks in March, when the US has already moved clocks and the UK has not.

Worked example

A call is set for Monday 9 March 2026 at 12:00 in New York.

  • New York is on daylight time (UTC-4), because US clocks moved forward on 8 March.
  • London is still on UTC+0, so it is 16:00 the same day.
  • Kolkata is UTC+5:30, so it is 21:30.
  • Tokyo is UTC+9, so it is 01:00 on Tuesday, shown as next day.

One week earlier, on 2 March, the same noon in New York would be 17:00 in London, one hour later than today. That surprise is the reason to calculate with a date.

Skipped and repeated hours

On 8 March 2026 New York clocks jump from 02:00 to 03:00, so 02:30 never happens. The tool moves it to 03:30 and shows a note. On 1 November 2026 the hour from 01:00 to 02:00 happens twice, and the first one is used.

To count days between meetings, use the date difference calculator. To add a number of days to a date, try add days to date. For duration math, see hours to minutes. The conversion runs in your browser and nothing is uploaded.

Questions

How do I convert a meeting time to several time zones?

Enter the date and time, say which city it is in, and list the cities to convert to. Each city's local time, date and UTC offset appear together.

Does it handle daylight saving time?

Yes. It uses your browser's built-in time zone database, so the offset on the chosen date is used, not today's offset. New York is UTC-5 in winter and UTC-4 in summer.

What if the time I enter does not exist or happens twice?

When clocks jump forward, one hour of local time is skipped and the tool moves your time forward and tells you. When clocks go back, the hour repeats and the first occurrence is used.

What can I type for a city or zone?

City names such as Tokyo or New York, IANA names such as Europe/London, and common abbreviations such as IST, EST or PST.

Why is India time shown as UTC+5:30?

India has one time zone, half an hour off a whole-hour offset, and does not use daylight saving. Nepal is UTC+5:45 and some Australian regions use +9:30.

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